Improvement in cultivator and harrow combined



filmed 5mm;

haircut dtjljlirc.

Letters Patent No. 93,692 dated August 17, 1869.

IMPROVEMENT IN CULTIVA'I'OR AND HARROW COMBINED.

The Schedule referred to in these Letters Patent and making part of thesame.

.m'ce cersm and The improvements hereinzclaimed consist, first, in thecombination, with a barrow or cultivatortooth, adapted to be pivoted toits frame or beam, and having notches (or teeth) upon its shank, of avertically-moving pivoted brace or pawl, to engage withany one of saidnotches, toset the tooth at vary ing angles with its beam, and therebyregulate the depth of penetration of the tooth into the soil, ashereinafter set forth; secondly, in a novel'method of .connecting theside pieces or-beams of .a frame (each beam carrying cultivator orharrow teeth) with each" other, and with a draught-link, in such manneras to allow either beam a slight longitudinal and sidewisej or.vibratory movement, independent of the other, to clear the teeth ofobstructions and prevent clogging, as hereinafter set forth; andthirdly, in the combination, with two triangular frames, connected by apivoted brace .at or near their rear ends, of a draughtbeam, connectedwith the draught-link of each frame,

and connecting and bracing the frames at their front ends, ashereinafter set forth.

In the accompanying drawings- Figure 1 represents a view in perspectiveof my convertible cultivator and barrow, and

Figure 2, a side elevation, on an enlarged scaleg of a tooth attached toits frame.

vAA represent the side beams of two triangular sections of a frame,formed by connecting the sections by the pivoted brace a at their innerrear ends,'and by a beam or cross-piece, B, (to which a forkeddraughtbar, b, for theattachment of the team is secured,) at their frontends. This draugl'it-beam B is slotted near its ends to receive couplinglinks O (l, which are pivoted between the front ends of the side piecesof the frames A A, to the bracing arms cc, which. are also pivoted tothe side pieces. These side pieces are connected and braced near theirrear ends by a cross-piece, D D, pivoted to each side piece, andalsoadjustable toward or from the rear of the frames, to expand or contractthem. When the frames are contracted, they areattached tothedraught-bcamat at 1. The links 0 C, after being passed through the draught-beam B,receive pins, either of wood or metal, to hold them in place.

By my mode of bracing and hinging the side-beams to each other, it willbe seen thatif the teeth of one beam should become clogged orobstructed, it will swing backward and inward, and thus clear the teeth,and if one section should meet with greater obstruction than the other,it would also swing back, and at the same time sidewise thus clearingitself. I

Each tooth E is' pivoted to its beam by a bolt, 0, so as to allow itavertical -swinging motion, and is pro- 'vided with notches F, upon thecurved top of its shank. A bracing-arm, latch, or detcnt, G, is pivotedin front of the pivot of the tooth, to swing vertically, and, has aprojection, fi fitting the notches F in the tooth-shank. I prefer to usea metal plate or bracket, H,'-secured (outside of the tooth and detcnt)to the beam by'the same bolts" that secure the tooth and detent. Thisplate serves to'protect the pivots, and the tooth and detent, and-as itconnects the two bolts, also serves to strengthen them,

llVhen my machine is to be used as a cultivator for hard-soil,- thedetentis .placed in they filQl 110mb of theshank', (as shown. in black,fig. 2,) and when "used as aharrow, in light, broken soil, the detent isshifted to the rear notch, (as shownin red,-fig. 2,) to prevent theteeth from clogging when the barrow is used'in toward the other section,

corn-stalk ground.

In going to and from the field, the detents are disengaged, and-theteeth allowed to swing back.' The machine is then supported upon theframe-pieces.

By disconnecting .thes ections, each one may be used as a cultivatoror'harrow.

Instead of two notches being' made in the shank,

asshown in the drawings, the tooth may be constructed with three "oreven more notches.

What I claimas my invention, and desireto secure by Letters Patent-,.is'I 1'. The combination of the vertically-swingingtooth, its notchedshank, and its locking-detent, all constructed as setflforth', for jointoperation.

' 2. The combination of thepivotedbeams A A, pivoted cross-piece D, andbracec, with the pivoted link 0, all constructed and operating asdescribed, for the purpose specified;

. 3. The combination of the triangular frames, the pivoted'brace-a,connecting their rear ends, the front connecting pivoted braces cc',.the pivoted links 0 G, and the draught-beam '13, all these partsbeing constructed for joint operation, substantially as set forth.

In testimonywhcreof, I have hereunto' subscribed my name.

EZRA EMMERT. .Witnesses:

GEORGE WEYENT,

I. P. MILI'LER.

